1. He was born in Germany.

Dẫn chứng: Levi Strauss, a 24-year-old German immigrant...

2. He intended to open a branch of his brother's New York dry goods business.

Dẫn chứng: Levi Strauss, a 24-year-old German immigrant, left New York for San Francisco with a small supply of dry goods with the intention of opening a branch of his brother's New York dry goods business. 

3. It was canvas.

Dẫn chứng: Levi Strauss had the canvas made into waist overalls.

4. Yes, they were.

Dẫn chứng: Miners liked the pants, but complained that they tended to chafe.